In fried foods, can make the products of bulk material, known as a leavening agent, also known as osteoporosis agent, leavening agent can be divided into chemical leavening agent and biological leavening agent. Chemical leavening agents are used, they are divided into basic leavening agent and composite leavening agent, our common alkaline leavening agent with sodium bicarbonate and ammonium carbonate, composite leavening agent types.

One, basic leavening agent sodium bicarbonate and sodium bicarbonate, white powder, odorless, salty taste, often with ammonium bicarbonate or ammonium carbonate. Ammonium bicarbonate and ammonium carbonate as white powder crystal, odor of ammonia. Alkaline osteoporosis agent has low price, durability, high stability when in use, so it is widely used in fried food.

Two, composite leavening agent in order to overcome or reduce the disadvantages of alkaline leavening agent, can use a different formula into composite leavening agent. Composite leavening agent in general and three component. A carbonate, an acidic substance, a starch or fatty acid and some other ingredients do fillings, commonly used as follows

The 1 organic acid and soda and the use of commonly used organic acids : citric acid, tartaric acid, lactic acid, succinic acid and other. Organic acid and alkali neutralization and effectively reduce the basicity products.

2 acid salts and sodium bicarbonate and its role more organic acid slowly, also can make full use of baking soda decomposition, and lower basicity, commonly used with potassium alum, sodium dihydrogen phosphate, potassium hydrogen tartrate, sodium hydrogen phosphate. Acidic salt stable, only when subjected to high temperature frying can be resolved gradually, and soda produced gas, so that the products of osteoporosis. This can make soda into full play the role of.

As a result of this mixed powder have very strong water absorption, should add some starch as a filler, to prevent water absorption caking.